September weather forecast
Guam National Wildlife Refuge, GU

Weather in September

An excellent water temperature of 85.1°F (29.5°C) makes September in Guam National Wildlife Refuge, Guam, a prime for swimming and other water activities.

Ocean temperature

In Guam National Wildlife Refuge, the average seawater temperature in September is 85.1°F (29.5°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Guam National Wildlife Refuge, the average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 6:09 am and sunset at 6:32 pm. On the last day of September, sunrise is at 6:09 am and sunset at 6:11 pm ChST.
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FAQ

What is the water temperature in September in Guam National Wildlife Refuge?

In Guam National Wildlife Refuge, the average seawater temperature in September is 85.1°F (29.5°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Guam National Wildlife Refuge have in September?

In Guam National Wildlife Refuge, Guam, the average day length in September is 12h and 13min.

When are sunrise and sunset in September in Guam National Wildlife Refuge?

On the first day of September, sunrise is at 6:09 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:11 pm ChST.

Average sea temperature in September
Guam National Wildlife Refuge, GU

Average sea temperature in September - Guam National Wildlife Refuge, GU
  • Average sea temperature in September: 85°F

The best month for swimming (with the highest average sea temperature) is August (85.4°F).
The coldest month (with the lowest average sea temperature) is February (82°F).

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Average daylight in September
Guam National Wildlife Refuge, GU

Average daylight in September - Guam National Wildlife Refuge, GU
  • Average daylight in September: 12h and 13min

The month with the longest days is June (Average daylight: 12h and 55min).
The month with the shortest days is December (Average daylight: 11h and 20min).

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